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Twenty-seven specimens in the University of Queensland Tephritidae collection determined by Francis Walker have been restudied and placed in their correct combinations. Eighteen species are represented, all except 2 described by Walker. Only Adrama selecta Walker, Dacus curcubitae Coquillett, Dacus determinatus Walker, Dasyneura zonata Saunders, Sophira punctifera Walker, Strumeta helomyzoides Walker and Trypeta multistriga Walker are Tephritidae. The other 11, originally described as new species of Dacus F., are Platystomatidae.

Thirty one genera [including Homoiothemara gen.n., Polyaroidea gen.n., Proepacrocerus gen.n. and 1 unnamed new(?) genus], 3 subgenera, 87 species [including 9 new species: Acrotaeniostola interrupta, Carpophthorella bivittata, Enicoptera gressitti, Homoiothemara eurycephala, Polyaroidea distincta, P. opposita, P. univittata, Proepacrocerus pallidoviridus and Xanthorrachis sabahensis and 6 unnamed new(?) species] and 1 subspecies are keyed and described or, if recently described elsewhere, only listed and additional data recorded. The following are new synonyms: Trypeta retorta Walker, Carpophthorella magnifica Hendel, Gastrozona bifasciata de Meijere and Gastrozona alboscutellata Enderlein =Carpophthorella nigrifascia Walker; Icteroptera van der Wulp =Sophira Walker; Sophira disjuncta Hardy =Sophira (Kambangania)ypsilon (Rondani); Curvinervis walkeri Hardy and Strumeta concisa Walker =Stymbara vagaria Walker; Carpophthorella scutellomaculata Hering =Xanthorrachis annandalei Bezzi. Proanoplomus cinereofasciatus (de Meijere) is a new combination and Spilocosmia kotoshoensis (Shiraki) is given new status.

Since 1963 a team research, multi-disciplinary project has been underway attempting to gain as much information as possible concerning evolutionary processes under insular conditions: why some groups have speciated so profusely in the Hawaiian Islands; why and how such an array and diversity of morphological and biological characters have arisen; the time required for speciation; and ultimately the origin of species. This has been a cooperative project of the University of Hawaii Departments of Entomology and Genetics and the Genetics Foundation, University of Texas, and has involved many senior investigators, technicians, and assistants. To date approximately 25 senior scientists from various institutions and about 150 graduate and undergraduate research assistants have taken part in this study. The stock center for the Hawaiian species has been established and is being maintained at the University of Texas. The species now in culture are available for experimental use by qualified researchers.

Drosophila affinidisjuncta Hardy n. sp. (Diptera) is morphologically indistinguishable from its sibling D. disjuncta Hardy and is described as a new species based upon genetic differences. By cytogenetic and cross-mating studies it has been demonstrated that populations of Drosophila, which have been previously treated as disjuncta Hardy ( 1965:245) , from the mountains of West Maui repre- sent a biologically distinct species. Drosophila disjuncta appears to be restricted to the slopes of Haleakala, East Maui. Specimens from East and West Maui are indistinguishable morphologically, but the chromo- somes show a number of fixed differences, and cross-mating experi- ments demonstrate that hybrid males are sterile. The species are char- acterized by the following chromosomal differences; D. disjuncta has a metaphase karyotype consisting of five pairs of rod-shaped and one pair of dot-like chromosomes. In contrast, the metaphase karyotype of D. affinidisjuncta shows three pairs of large, V-shaped chromosomes, one pair of large and one pair of small J-shaped chromosomes and a pair of dot-like chromosomes. This difference between the karyotypes of the species is due to the presence of large heterochromatic blocks on each of the autosomes as well as on the X chromosome. Further de- tails are presented in this journal in the following article, "Cytogenetic